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ChemComm Unit 2A
Test Description: ChemComm
Instructions: Answer all questions to get your test result.
1) a property that can be observed or measured without changing the identity of the sample of matter
A
atomic number
B
physical property
C
chemical property
D
group or family
2) a change in matter in which the identity of the material involved does not change
A
chemical change
B
metalloids
C
physical change
D
isotopes
3) a property only observed or measured by changing the chemical identity of a sample of matter
A
atomic number
B
chemical property
C
isotopes
D
physical property
4) an interaction of matter that results in the formation of one or more new substances
A
chemical change
B
atomic mass
C
nonmetal
D
physical change
5) a chemical reaction with oxygen gas that produces thermal energy and light; burning
A
combustion
B
luster
C
malleable
D
brittle
6) a property of a material that permits it to be stretched into a wire without breaking
A
ductile
B
brittle
C
luster
D
combustion
7) the reflection of light from the surface of a material
A
luster
B
combustion
C
brittle
D
ductile
8) a material possessing properties such as luster, ductility, conductivity, and malleability
A
metal
B
nonmetal
C
metalloids
D
isotopes
9) a material possessing properties such as brittleness, lack of luster, and nonconductivity; nonmetals are often insulators
A
metal
B
metalloids
C
nonmetal
D
ductile
10) materials with properties intermediate between those of metals and nonmetals
A
halogen family
B
isotopes
C
metalloids
D
alkali metal family
11) a material that allows electricity to flow through it
A
conductor
B
isotopes
C
halogen family
D
brittle
12) a material possessing properties such as brittleness, lack of luster, and nonconductivity
A
isotopes
B
metal
C
nonconductor
D
metalloid
13) the property of a material that permits it to be flattened without shattering
A
ductile
B
malleable
C
luster
D
brittle
14) a property of a material that causes it to shatter under pressure
A
ductile
B
brittle
C
malleable
D
luster
15) the number of protons in an atom
A
isotopes
B
group or family
C
mass number
D
atomic number
16) the sum of the number of protons and neutrons in the nucleus of an atom of a particular isotope
A
mass number
B
isotopes
C
group or family
D
atomic number
17) atoms of the same element with differing numbers of neutrons
A
nonconductor
B
alkali metal family
C
isotopes
D
halogen family
18) a vertical column of elements in the periodic table
A
atomic number
B
group or family
C
isotopes
D
metalloids
19) the group of elements consisting of lithium, sodium, potassium, rubidium, cesium, and francium
A
halogen family
B
nonmetal
C
alkali metal family
D
isotopes
20) the group of elements consisting of fluorine, chlorine, bromine, iodine, and astatine
A
halogen family
B
alkali metal family
C
isotopes
D
metalloids
*select an answer for all questions
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